High efficiency disposable cellulosic wiper
View Patent ↗A disposable cellulosic wiper includes (a) a percentage by weight of pulp-derived papermaking fibers, and (b) a percentage by weight of fibrillated regenerated independent cellulosic microfibers having a characteristic Canadian Standard Freeness (CSF) value of less than 175 ml and having a weight average diameter of less than 2 microns. The microfibers are further characterized in that 40% by weight thereof is finer than 14 mesh.
1. A disposable cellulosic wiper comprising:
(a) a percentage by weight of pulp-derived papermaking fibers; and
(b) from about 10% to about 75% by weight of fibrillated regenerated independent cellulosic microfibers having a characteristic Canadian Standard Freeness (CSF) value of less than 175 ml and having a weight average diameter of less than 2 microns,
the microfibers being further characterized in that 40% by weight thereof is finer than 14 mesh.
2. The disposable cellulosic wiper according to claim 1 , wherein the percentage by weight of the pulp-derived papermaking fibers is 25% or more.
3. The disposable cellulosic wiper according to claim 1 , wherein the percentage by weight of the fibrillated regenerated independent cellulosic microfibers is up to 75%.
4. The disposable cellulosic wiper according to claim 1 , wherein the wiper has more than 25% by weight of the fibrillated regenerated independent cellulosic microfibers.
5. The disposable cellulosic wiper according to claim 1 , wherein the wiper has more than 30% by weight of the fibrillated regenerated independent cellulosic microfibers.
6. The disposable cellulosic wiper according to claim 1 , wherein the wiper has more than 35% by weight of the fibrillated regenerated independent cellulosic microfibers.
7. The disposable cellulosic wiper according to claim 1 , wherein at least 50% by weight of the fibrillated regenerated independent cellulosic microfibers is finer than 14 mesh, has a weight average diameter of less than 2 microns, and a weight average length of less than 500 microns.
8. The disposable cellulosic wiper according to claim 1 , wherein at least 60% by weight of the fibrillated regenerated independent cellulosic microfibers is finer than 14 mesh.
9. The disposable cellulosic wiper according to claim 1 , wherein at least 70% by weight of the fibrillated regenerated independent cellulosic microfibers is finer than 14 mesh.
10. The disposable cellulosic wiper according to claim 1 , wherein at least 80% by weight of the fibrillated regenerated independent cellulosic microfibers is finer than 14 mesh.
11. The disposable cellulosic wiper according to claim 1 , wherein the fibrillated regenerated independent cellulosic microfibers have a number average diameter of less than about 2 microns.
12. The disposable cellulosic wiper according to claim 1 , wherein the fibrillated regenerated independent cellulosic microfibers have a number average diameter of from about 0.1 to about 2 microns.
13. The disposable cellulosic wiper according to claim 1 , wherein the fibrillated regenerated independent cellulosic microfibers have a fiber count greater than 50 million fibers/gram.
14. The disposable cellulosic wiper according to claim 1 , wherein the fibrillated regenerated independent cellulosic microfibers have a weight average diameter of less than 2 microns, a weight average length of less than 500 microns, and a fiber count of greater than 400 million fibers/gram.
15. The disposable cellulosic wiper according to claim 1 , wherein the fibrillated regenerated independent cellulosic microfibers have a weight average diameter of less than 1 micron, a weight average length of less than 400 microns, and a fiber count of greater than 2 billion fibers/gram.
16. The disposable cellulosic wiper according to claim 1 , wherein the fibrillated regenerated independent cellulosic microfibers have a weight average diameter of less than 0.5 microns, a weight average length of less than 300 microns, and a fiber count of greater than 10 billion fibers/gram.
17. The disposable cellulosic wiper according to claim 1 , wherein the fibrillated regenerated independent cellulosic microfibers have a weight average diameter of less than 0.25 microns, a weight average length of less than 200 microns, and a fiber count of greater than 50 billion fibers/gram.
18. The disposable cellulosic wiper according to claim 1 , wherein the fibrillated regenerated independent cellulosic microfibers have a fiber count greater than 200 billion fibers/gram.
19. The disposable cellulosic wiper according to claim 1 , wherein the fibrillated regenerated independent cellulosic microfibers have a coarseness value of less than about 0.5 mg/100 m.
20. The disposable cellulosic wiper according to claim 1 , wherein the fibrillated regenerated independent cellulosic microfibers have a coarseness value of from about 0.001 mg/100 m to about 0.2 mg/100 m.